KR101965654B1 - Automotive vehicles - Google Patents

Abstract

The present invention relates to an automobile having a Rankine cycle power generation apparatus and, if necessary, the condenser of the air conditioning apparatus can be used as a condenser for a power generation apparatus, or the condenser of the power generation apparatus can be used as a condenser for an air conditioning apparatus, It is an object of the present invention to improve the efficiency of condensing refrigerant of an air conditioner and improve the power generation performance of the power generating device and the cooling performance of the air conditioner.
In order to achieve the above object, the present invention provides a power generating apparatus comprising an electric power generating device and an air conditioner, wherein the electric power generating device includes a fluid pump for circulating the refrigerant, an evaporator for evaporating the refrigerant by exchanging heat between the refrigerant of the fluid pump and the high- And an expansion device for driving the generator with the refrigerant vaporized in the evaporator, wherein the air conditioning device is an automobile including a compressor, a condenser, an expansion valve and an evaporator, wherein the refrigerant of the air conditioning device circulated to the condenser of the air conditioning device, And the refrigerant of the power generation apparatus discharged from the condenser of the power generation apparatus is circulated to the condenser of the air conditioning apparatus so that the condenser of the air conditioning apparatus can control the cooling of the refrigerant of the power generation apparatus, The refrigerant of the apparatus is limited and the refrigerant of the air conditioner discharged from the condenser of the air conditioner is circulated to the condenser of the power generator, And a refrigerant flow control means for controlling the condenser of the generator to cool the refrigerant of the power generation apparatus.

Description

Automotive {AUTOMOTIVE VEHICLES}

The present invention relates to a vehicle having a Rankine cycle generator, and more particularly, to a motor vehicle having a Rankine cycle generator, and more particularly, a condenser of an air conditioning apparatus can be used as a condenser for a power generator or a condenser Thereby improving the condensing efficiency of the refrigerant between the power generating device and the air conditioner and improving the power generation performance of the power generating device and the cooling performance of the air conditioner.

The automobile is equipped with a power generation device for supplying electricity to various electric devices. Such a power generation apparatus is being developed gradually as a technology capable of improving fuel efficiency of a vehicle in recent years. As an example thereof, there is a power generation apparatus using waste heat of an engine.

1, a power generator (hereinafter referred to as "power generator") using a waste heat of an engine is an auxiliary power generator using Rankine Cycle. The power generator 1 includes a fluid pump 1 and an evaporator 3 An expander 5 and a condenser 7, as shown in Fig.

The fluid pump (1) pumps the refrigerant to circulate.

The evaporator 3 is provided with a first flow path 3a through which the cooling water of the engine 9 can pass and a second flow path 3b through which the refrigerant of the fluid pump 1 can pass, Exchanges heat between the high-temperature engine cooling water flowing along the flow path 3a and the refrigerant flowing along the second flow path 3b. Therefore, the refrigerant in the second flow path 3b can be heated and evaporated.

The inflator (5) is a kind of steam turbine, in which refrigerant vapor in the gaseous state evaporated in the evaporator (3) is introduced to rotate the turbine inside, and then the generator (5a) is driven by the rotating turbine. Thus, the generator 5a can generate power.

The condenser 7 introduces the refrigerant of the inflator 5 and then cools the refrigerant by heat exchange with the surrounding air. Therefore, the refrigerant passing through the inside is condensed and discharged into the liquid phase, and the discharged liquid phase refrigerant can be circulated to the fluid pump 1.

According to such a power generation apparatus, since it uses the waste heat of the engine 9, no additional energy is consumed. Therefore, it is very advantageous in improving the fuel efficiency of the vehicle.

In order to increase the efficiency of condensing the refrigerant, it is necessary to increase the heat dissipating area of the condenser 7 and to increase the condensing efficiency of the condenser 7 The size of the condenser 7 must be designed to be large in order to increase the heat radiation area.

As a result, there is a drawback that the engine room of the vehicle in which the condenser 7 is installed can not be designed largely because of such disadvantage. As a result, there is a drawback that installation of the condenser 7 is restricted.

It is an object of the present invention to provide a condenser for an electric power generator which can be used as a condenser for an electric power generator without increasing the size of the condenser for electric power generator, Which is capable of increasing the efficiency of condensation of refrigerant.

It is another object of the present invention to provide an automobile which can obtain effective power generation without increasing the size of the condenser by constructing the condenser for the power generation apparatus so that the condensing efficiency of the coolant can be increased without increasing the size of the condenser.

It is still another object of the present invention to provide a vehicle which can be installed without an increase in the size of the condenser and which is capable of generating an effective amount of electricity, so that the condenser can be installed in the engine room without any limitation.

In order to achieve the above object, the automobile according to the present invention comprises a Rankine cycle power generation device and an air conditioning device, wherein the power generation device includes a fluid pump for circulating the refrigerant, An evaporator for evaporating the refrigerant by heat exchange; and an inflator for driving the generator by the refrigerant vaporized in the evaporator, wherein the air conditioning apparatus includes a compressor, a condenser, an expansion valve, and an evaporator, The refrigerant of the air conditioner circulated to the condenser of the air conditioner is restricted and the refrigerant of the power generator discharged from the condenser of the power generator is circulated to the condenser of the air conditioner so that the condenser of the air conditioner can cool the refrigerant of the power generator Or restricts the refrigerant of the power generation apparatus that is circulated to the condenser of the power generation apparatus, And a refrigerant flow control means for circulating the refrigerant of the air conditioner discharged from the condenser of the conditioning apparatus to the condenser of the power generation apparatus so that the condenser of the power generation apparatus can cool the refrigerant of the power generation apparatus .

Preferably, the refrigerant flow control means includes: a first directional control valve capable of controlling the flow of refrigerant discharged from the condenser of the power generation device; A second directional control valve capable of controlling a flow of refrigerant introduced into the condenser of the air conditioner; A third directional control valve capable of controlling the flow of the refrigerant discharged from the condenser of the air conditioner; A fourth directional control valve capable of controlling the flow of the refrigerant introduced into the condenser of the power generation device; And a control unit for controlling the first to fourth directional control valves in any one of the first to third modes; Wherein the first to fourth directional control valves allow the normal refrigerant flow of the power generation unit introduced from the inflator to the fluid pump via the condenser in the first mode, In the second mode, the compressor-side refrigerant circulated to the condenser of the air conditioner is restricted, and the refrigerant discharged from the condenser of the power generator is supplied to the condenser of the air conditioner And returning the refrigerant of the power generation device circulated through the condenser of the air conditioning device to the inlet side of the fluid pump of the power generation device and limiting the refrigerant side refrigerant circulated to the condenser of the power generation device in the third mode, The refrigerant discharged from the condenser of the air conditioner is introduced into the condenser of the power generator, And returns the refrigerant of the air conditioning apparatus circulating the condenser to the expansion valve inlet side of the air conditioner.

According to the automobile of the present invention, when the air conditioner is turned off, since the condenser of the air conditioner that is not used is used as the condenser for the power generator, the efficiency of condensing the refrigerant can be increased without increasing the size of the condenser of the power generator There is an effect that can be.

In addition, since the condensing efficiency of the refrigerant can be increased without increasing the size of the condenser of the power generation device, an effective power generation amount can be obtained without increasing the size of the condenser.

In addition, since the structure can obtain an effective power generation amount without increasing the size of the condenser of the power generation apparatus, there is an effect that the condenser of the power generation apparatus can be installed in the engine room without any limitation.

In addition, since the condenser of the power generating apparatus is used as a condenser for an air conditioner when the cooling load of the air conditioner is large, the refrigerant condensing efficiency of the air conditioner can be remarkably improved.

In addition, since the refrigerant condensing efficiency of the air conditioner can be remarkably improved, the cooling performance of the air conditioner can be improved despite the increase of the cooling load, and as a result, the cooling efficiency of the car interior can be increased.

1 is a view showing a conventional power generation device for a vehicle,
2 is a view showing a configuration of a vehicle according to the present invention,
Fig. 3 is an operational view showing an operation example of the present invention, in which the power generation device and the air conditioner are operated independently when the air cooling load of the air conditioner is equal to or lower than the reference load while the air conditioner is turned on drawing,
FIG. 4 is an operation diagram showing an operation example of the present invention. FIG. 4 is a diagram showing a state in which a condenser of an air conditioner is used as a condenser for a power generator when the air conditioner is turned off,
FIG. 5 is an operational view showing an operation example of the present invention. When the cooling load of the air conditioner exceeds the reference load while the air conditioner is turned on, the condenser of the power generator is used as a condenser for the air conditioner Fig.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the automobile according to the present invention will be described in detail with reference to the accompanying drawings.

First, a description will be given of an electric power generating apparatus 10 and an air conditioner 20 of an automobile with reference to FIG. 2, before examining the features of the automobile according to the present invention.

The power generation apparatus 10 includes a fluid pump 12, an evaporator 14, an inflator 16, and a condenser 18. The fluid pump 12 pumps and circulates the refrigerant.

The evaporator 14 has a first flow path 14a through which the cooling water of the engine 19 can pass and a second flow path 14b through which the refrigerant of the fluid pump 12 can pass.

The evaporator 14 exchanges heat between the high temperature engine cooling water flowing along the first flow path 14a and the refrigerant flowing along the second flow path 14b. Therefore, the refrigerant in the second flow path 14b can be heated and evaporated.

The inflator 16 introduces the gaseous refrigerant evaporated in the evaporator 14, rotates the inner turbine, and drives the generator 16a with the rotating turbine. Thus, the generator 16a can generate power.

The condenser 18 introduces the refrigerant of the inflator 16, and then cools the refrigerant by heat exchange with the surrounding air. Therefore, the refrigerant passing through the inside can be circulated to the fluid pump 12 while being condensed in a liquid state.

The air conditioner 20 includes a compressor 22, a condenser 24, an expansion valve 26, and an evaporator 28.

The compressor (22) compresses the vaporized refrigerant into a gas of high temperature and high pressure, and the condenser (24) liquefies the refrigerant of high temperature and high pressure.

After introducing the liquefied refrigerant, the expansion valve 26 decompresses and expands the refrigerant to low-temperature and low-pressure refrigerant. The evaporator 28 introduces the low-temperature and low-pressure refrigerant decompressed and expanded, Generate cold air.

Next, the features of the vehicle according to the present invention will be described in detail with reference to Figs. 2 to 5. Fig.

First, referring to Fig. 2, the automobile of the present invention is provided with a refrigerant flow control means for controlling the flow direction of the refrigerant in the power generation device 10 and the air conditioner 20.

The refrigerant flow control means includes a first directional control valve 30 provided on the outlet side of the condenser 18 of the power generation apparatus 10 and a second directional control valve 30 provided on the inlet side of the condenser 24 of the air- A third directional control valve 34 provided at the outlet side of the condenser 24 of the air conditioner 20 and a third directional control valve 34 provided at the inlet side of the condenser 18 of the power generation device 10, And a valve (36).

The first directional control valve 30 is a solenoid-type four-way valve and is controlled in the "first mode", the "second mode" and the "third mode". At this time, in the "first mode ", the refrigerant discharged from the condenser 18 is introduced into the fluid pump 12, the refrigerant discharged from the condenser 18 is bypassed in the" , The refrigerant discharged from the condenser 18 is introduced to the inlet side of the expansion valve 26 of the air conditioner 20.

The second directional control valve 32 is a solenoid type three-way valve controlled in "first mode", "second mode" and "third mode". At this time, in the "first mode" and the "third mode", refrigerant discharged from the compressor 22 is introduced into the condenser 24, and in the "second mode", refrigerant discharged from the compressor 22 is introduced into the condenser 24 The flow of the refrigerant is cut off and the refrigerant at the outlet side of the condenser 18 of the power generation apparatus 10 bypassed by the first directional control valve 30 is introduced to the inlet side of the condenser 24 of the air conditioner 20.

The third directional control valve 34 is a solenoid type four-way valve, and is controlled in the "first mode", the "second mode" and the "third mode". At this time, in the "first mode", the refrigerant discharged from the condenser 24 is introduced into the expansion valve 26, and in the "second mode", the refrigerant discharged from the condenser 24 is supplied to the fluid pump (12), and bypasses the refrigerant discharged from the condenser (24) in the "third mode ".

The fourth directional control valve 36 is a solenoid-type three-way valve controlled in "first mode", "second mode" and "third mode". At this time, in the "first mode" and the "second mode", the refrigerant discharged from the inflator 16 is introduced into the condenser 18, and in the "third mode", the refrigerant discharged from the inflator 16 into the condenser 18 The flow of the refrigerant is cut off and the refrigerant at the outlet side of the condenser 24 of the air conditioner 20 bypassed by the third directional control valve 34 is introduced to the inlet side of the condenser 18 of the power generator 10.

The refrigerant flow control means is provided with a control unit (40) for controlling the first to fourth directional control valves (30, 32, 34, 36).

The control unit 40 is provided with a microprocessor. The control unit 40 is provided with an independent driving mode, a "power generation mode" and an "air conditioning only mode " Mode ". The controller 40 controls the first to fourth directional control valves 30, 32, 34, and 36 according to the mode.

That is, for example, when the "air-on signal (ON)" is inputted from the air condition on / off detecting means 42 and the cooling load inputted from the cooling load detecting means 44 is " Quot; load ", it is determined that the air conditioner is currently operating but the cooling load is small, and the mode is switched to the "independent driving mode ".

The controller 40, which has been switched to the "independent drive mode", controls the first to fourth directional control valves 30, 32, 34, and 36 to the "first mode" .

Then the fourth directional control valve 36 introduces the refrigerant discharged from the expander 16 to the condenser 18 and the first directional control valve 30 supplies the refrigerant discharged from the condenser 18 to the fluid pump 12).

The second directional control valve 32 introduces the refrigerant discharged from the compressor 22 to the condenser 24 and the third directional control valve 34 discharges the refrigerant discharged from the condenser 24 to the expansion valve 24, (Not shown).

Therefore, it is possible to independently control the power generation device 10 and the air conditioning device 20 so that the power generation function of the power generation device 10 and the cooling function of the air conditioning device 20 can be independently controlled do.

As a result, when the air conditioner is operated and the cooling load thereof is small, the control unit 40 controls the first to fourth directional control valves 30, 32, 34, and 36 to the " (10) and the air conditioner (20) independently.

4, when the "air conditioner off" signal is inputted from the air condition on / off detecting means 42, the control unit 40 judges that the current air conditioner is turned off, "

The control unit 40, which has been switched to the "power generation only mode", controls the first to fourth directional control valves 30, 32, 34, 36 to all the "second mode".

The first directional control valve 30 bypasses the refrigerant that has passed through the condenser 18 of the power generator 10 and the second directional control valve 32 is bypassed by the first directional control valve 30, And the third directional control valve 34 introduces the refrigerant of the power generation device 10 that has passed through the condenser 24 to the condenser 24 of the air conditioner 20, (12) to the inlet side.

Thus, the refrigerant that has passed through the condenser 18 of the power generation apparatus 10 can be introduced into the condenser 24 of the air conditioner 20. This causes the refrigerant primarily condensed in the condenser 18 of the power generation apparatus 10 to be further introduced into the condenser 24 of the air conditioner 20 to be further condensed. As a result, the condensing efficiency of the refrigerant is increased, thereby increasing the effective power generation amount of the power generation device 10. [

As a result, when the air conditioner is turned off, the control unit 40 controls the first to fourth directional control valves 30, 32, 34, and 36 to the " The condenser 24 is used as a condenser for the power generation apparatus 10 and as a result the effective power generation amount of the power generation apparatus 10 is remarkably improved by increasing the refrigerant condensing efficiency of the power generation apparatus 10. [

5, the controller 40 receives the " air condition ON signal "from the air condition on / off detecting means 42, and the cooling load inputted from the cooling load detecting means 44 is set in advance When the set "reference load" is exceeded, the current air conditioner is activated, the cooling load is determined to be large, and the mode is switched to the "air conditioner dedicated mode ".

The control unit 40 that has been switched to the "air conditioner only mode " controls all the first to fourth directional control valves 30, 32, 34, and 36 to the" third mode ".

The third directional control valve 34 bypasses the refrigerant that has passed through the condenser 24 of the air conditioner 20 and the fourth directional control valve 36 is bypassed by the third directional control valve 34, The first directional control valve 30 introduces the refrigerant from the air conditioner 20 that has passed through the condenser 18 to the expansion valve 20 of the air conditioner 20, (26) to the inlet side.

Therefore, the refrigerant that has passed through the condenser 24 of the air conditioner 20 can be introduced into the condenser 18 of the power generator 10. Thereby, the refrigerant primarily condensed in the condenser (24) of the air conditioner (20) is introduced into the condenser (18) of the power generator (10) and further condensed. As a result, the condensing efficiency of the refrigerant is increased, thereby increasing the cooling efficiency of the air conditioning apparatus 20. [

As a result, when the air conditioner is operated and the cooling load thereof is large, the control unit 40 controls the first to fourth directional control valves 30, 32, 34, and 36 to the " The condenser 18 of the power generation apparatus 10 is used as a condenser for the air conditioner 20 and as a result the cooling efficiency of the air conditioner 20 is remarkably improved by increasing the refrigerant condensing efficiency of the air conditioner 20 .

On the other hand, the air conditioner on / off detecting means 42 for providing the controller 40 with the on / off status of the air conditioner is preferably constituted by an air conditioner on / off switch (not shown).

The air conditioner on / off switch detects whether the air conditioner is on or off by outputting an "air conditioner ON" signal or an "air conditioner OFF" signal when the user turns the air conditioner on or off.

In the case of the air conditioner of the automatic control system, the air conditioner on / off detecting means 42 may be constituted by an automatic control unit (not shown).

The automatic control unit turns on / off the adsorption type air conditioner according to the temperature inside or outside the vehicle, and outputs an "air conditioner on signal" or an "air conditioner off signal" to detect on / off of the air conditioner.

The cooling load detecting means 44 for providing cooling load data of the air conditioner to the control unit 40 is preferably composed of a vehicle speed sensing device (not shown).

The vehicle speed sensing device includes a vehicle speed sensor and indirectly senses the cooling load of the air conditioner by sensing the vehicle speed.

That is, the cooling load of the air conditioner gradually decreases inversely as the engine speed (RPM) gradually increases as the vehicle speed is fast. On the contrary, if the vehicle speed is slow and the number of revolutions of the engine is gradually decreased, the vehicle speed becomes gradually larger inversely. Accordingly, when the vehicle speed is sensed, the cooling load of the air conditioner can be indirectly detected.

According to the automobile of the present invention having such a configuration, when the air conditioner 20 is turned off, the condenser 24 of the unused air conditioner 20 is utilized as a condenser for the power generator 10, The condensing efficiency of the refrigerant can be increased without increasing the size of the condenser 18 of the power generation device 10. [

Further, since the condensing efficiency of the refrigerant can be increased without increasing the size of the condenser 18 of the power generation device 10, an effective power generation amount can be obtained without increasing the size of the condenser 18. [

The condenser 18 of the power generation apparatus 10 can be installed in the engine room easily without any limitation because it is possible to obtain an effective power generation amount without increasing the size of the condenser 18 of the power generation apparatus 10. [ .

Further, since the condenser 18 of the power generator 10 is used as a condenser for the air conditioner 20 when the cooling load of the air conditioner 20 is large, the refrigerant condensing efficiency of the air conditioner 20 is remarkably high .

In addition, since the refrigerant condensing efficiency of the air conditioning apparatus 20 can be remarkably improved, the cooling performance of the air conditioning apparatus 20 can be improved despite the increase of the cooling load, and as a result, have.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention.

10: power generation device 12: fluid pump (pump)
14: evaporator 16: expander
16a: generator 18: condenser
20: air conditioner 22: compressor
24: condenser 26: expansion valve (valve)
28: evaporator 30: first directional control valve
32: second direction control valve 34: third direction control valve
36: fourth direction control valve 40:
42: air condition ON / OFF detecting means 44: cooling load detecting means

Claims (3)

The power generation apparatus (10) comprises a fluid pump (12) for circulating a refrigerant, a coolant pump (12) for circulating the coolant in the fluid pump (12) And an expander (16) for driving the generator (16a) with refrigerant evaporated in the evaporator (14), wherein the air conditioning apparatus (20) comprises a compressor (22) ), A condenser (24), an expansion valve (26), and an evaporator (28)
The refrigerant of the air conditioner 20 circulated to the condenser 24 of the air conditioner 20 is limited and the refrigerant of the power generating device 10 discharged from the condenser 18 of the power generating device 10 Is circulated to the condenser (24) of the air conditioner (20) so that the condenser (24) of the air conditioner (20) can cool the refrigerant of the power generator (10)
The refrigerant of the power generation apparatus 10 circulated to the condenser 18 of the power generation apparatus 10 is limited and the refrigerant of the air conditioning apparatus 20 discharged from the condenser 24 of the air conditioning apparatus 20 is supplied to the power generation apparatus 10, And a refrigerant flow control means for circulating the refrigerant to the condenser 18 of the power generation apparatus 10 so that the condenser 18 of the power generation apparatus 10 can cool the refrigerant of the air conditioning apparatus 20 car. The method according to claim 1,
Wherein the refrigerant flow control means comprises:
A first directional control valve (30) capable of controlling the flow of refrigerant discharged from the condenser (18) of the power generator (10);
A second directional control valve (32) capable of controlling the flow of refrigerant introduced into the condenser (24) of the air conditioner (20);
A third directional control valve 34 for controlling the flow of the refrigerant discharged from the condenser 24 of the air conditioner 20;
A fourth directional control valve (36) capable of controlling the flow of the refrigerant introduced into the condenser (18) of the power generation device (10);
And a control unit (40) for controlling the first to fourth directional control valves (30, 32, 34, 36) in any one of the first to third modes;
The first to fourth directional control valves 30, 32, 34,
In the first mode, normal refrigerant flow from the power generator (10) introduced into the fluid pump (12) through the condenser (18) in the inflator (16) Permits normal refrigerant flow of the air conditioning apparatus (20) introduced into the expansion valve (26) through the condenser (24)
In the second mode, the refrigerant on the side of the compressor 22 circulated to the condenser 24 of the air conditioning apparatus 20 is restricted and the refrigerant discharged from the condenser 18 of the power generation apparatus 10 is supplied to the air conditioning apparatus 20 to the condenser 24 and returns the refrigerant of the power generation apparatus 10 that has passed through the condenser 24 of the air conditioning apparatus 20 to the inlet side of the fluid pump 12 of the power generation apparatus 10 ,
The refrigerant discharged from the condenser 24 of the air conditioning apparatus 20 is discharged to the power generator apparatus 20 in the third mode by limiting the refrigerant on the side of the inflator 16 circulated to the condenser 18 of the power generator apparatus 10, 10 to the condenser 18 and returns the refrigerant of the air conditioner 20 that has passed through the condenser 18 of the power generator 10 to the inlet side of the expansion valve 26 of the air conditioner 20 A car characterized by. 3. The method of claim 2,
The control unit (40)
When the cooling load of the air conditioner 20 is equal to or lower than a predetermined reference load under the condition that the air conditioner 20 is turned on, the first to fourth directional control valves 30, 32, 34, 36 ) In a first mode,
Controls the first to fourth directional control valves (30, 32, 34, 36) to the second mode when the air conditioner (20) is turned off;
When the cooling load of the air conditioner (20) exceeds a preset reference load while the air conditioner (20) is turned on, the first to fourth directional control valves (30, 32, 34 , 36) in a third mode.

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